KR102661396B1 - Roll map producing device for merged electrode - Google Patents

Abstract

The roll map generating device of one embodiment of the present invention is a position measuring device that acquires the longitudinal position of the electrode according to the amount of rotation of the rewinder as coordinate value data when the electrode moves in a roll-to-roll state between an unwinder and a rewinder. ; An input device capable of inputting an input signal indicating the start or end of joint winding by connecting at least two old electrodes, each marked with a plurality of reference points at predetermined intervals, to form a new electrode; a seam sensor that detects a seam that is a connection area between the new electrode and the old electrode that is wound together, and acquires electrode coordinate values of the seam in conjunction with the position measuring device; a reference point detector that detects reference points of the jointly wound new electrode and acquires electrode coordinate values of the reference points in conjunction with the position measuring device; And based on the input signal from the input device, a roll map simulating a new electrode moving in a roll-to-roll state is generated, and in conjunction with the position measuring device, a seam detector, and a reference point detector, the electrode longitudinal coordinate value and the seam are displayed on the roll map. It includes a roll map generator that displays electrode coordinate values and electrode coordinate values of a reference point.

Description

ROLL MAP PRODUCING DEVICE FOR MERGED ELECTRODE}

The present invention relates to a roll map generating device for a bundled electrode in which a plurality of electrodes are wound together.

As technology development and demand for mobile devices increase, demand for secondary batteries is also rapidly increasing. Among them, lithium secondary batteries are widely used as an energy source for various mobile devices as well as various electronic products because they have high energy density and operating voltage and excellent preservation and lifespan characteristics.

The electrode manufacturing process for manufacturing electrodes for lithium secondary batteries includes a coating process to form a positive electrode and a negative electrode by applying an active material and a predetermined insulating material to the surface of a metal electrode plate, which is a current collector, and a roll press process and rolling to roll the coated electrode. It consists of a plurality of detailed processes including a slitting process in which the electrode is cut according to its dimensions.

The electrode manufactured in the electrode manufacturing process has electrode tabs formed through a notching process, and an electrode assembly is formed by interposing a separator between the anode and the cathode. This electrode assembly is then stacked or folded to be packaged in a pouch or can, and the electrolyte is added. The shape of the secondary battery is created through the liquid injection assembly process. Afterwards, the assembled secondary battery is charged and discharged, goes through an activation process that gives the battery characteristics, and becomes the final finished secondary battery.

The electrode manufacturing process is performed in a roll-to-roll state in which an electrode roll is mounted and moved between an unwinder and a rewinder. A normal electrode roll (jumbo roll) varies depending on the type, but has an electrode length of, for example, a total length of 2000 to 3000 m. However, during the electrode manufacturing process, there are cases where the entire electrode cannot be used due to post-processing, and scrap electrodes of several hundred meters in length are inevitably left behind. Alternatively, there may be a case where a large number of defects occur and the defects are cut off, leaving some normal electrodes. In consideration of productivity, there are cases where, rather than discarding these scrap electrodes, several scrap electrodes are bundled together and lot merged into a standard winding diameter.

Figure 1 is a schematic diagram showing that different lots of old electrodes are inputted from an unwinder (UW), connected to each other, and the connected new electrodes are wound (combined winding) in a rewinder (RW).

As shown, the electrodes of lots A and B each have a length of 600 m. For example, if the above scrap electrodes are connected to make a new electrode (lot C) with a total winding of 3000 m, five electrodes of 600 m can be wound together.

When connecting a plurality of electrodes, the starting or rear end of one electrode is usually cut off and connected. Therefore, in most cases, the length of the new electrode wound together is different from the sum of the lengths of the old electrode (1200 m). In other words, the electrodes unwound through the unwinder are each 600 m long and the total length is 1200 m, but the electrodes wound together in the rewinder can be measured as 1000 m. Conventionally, only the overall length of new electrode C was measured with the encoder of the rewinder during joint winding, and the detailed configuration of new electrode C (electrode length or electrode coordinate values of lots A and B) was not managed. Because of this, it was not possible to determine where the electrode coordinate value of the terminal end of Lot A was and where the electrode coordinate value of the starting end of Lot B were in the new electrode C. Therefore, if a defect occurs in a notched electrode or electrode assembly manufactured with electrodes from lot C in post-processes such as notching and assembly processes, the cause of the defect cannot be determined precisely from which part of lot C the electrode came from. Quality tracking was virtually impossible. In addition, if a problem occurred in the final product battery manufactured with the electrode of lot C, it was possible to trace back to the notching process and find the electrode part from which the battery originated. However, for the multi-wound electrode C, the specific raw material electrodes A and B were used. It was difficult to accurately determine the cause of the defect because the coordinates of the product could not be determined.

In addition, the present applicant recently developed a roll map-related technology that simulates the movement of electrodes moving in a roll-to-roll state during the electrode manufacturing process and displays them in the form of a bar. The roll map simulates the electrode in a roll-to-roll state and can display data related to quality or defects on a roll map in the form of a bar shown on the screen, making it easy to visually view data related to quality or defects in the electrode coating process at a glance. It can be clearly understood.

These roll maps can be created for each detailed process of the electrode coating process, roll press process, and slitting process. For example, the role map information created in the first process can be used in the second process, and defects, etc. can be removed in the second process by referring to the roll map of the first process. However, in the first process, when the scrap electrodes are wound together as described above to form a new electrode C, if the electrode length changes as shown in FIG. 1, the coordinate value of the electrode must be corrected according to the change in length. If the electrode coordinate values are not corrected despite the change in electrode length, accurate follow-up work cannot be performed in the second process. In addition, as mentioned above, when a plurality of electrodes are wound together and a problem occurs in a product manufactured with the wound electrodes, if the length or coordinates of each electrode constituting the new electrode can be accurately displayed on the roll map, Quality tracking or backtracking can be easily performed by type.

Therefore, there is a need for a roll map-related technology that can easily track quality when a plurality of electrodes are wound together.

Republic of Korea Patent Publication No. 10-1731983 (2017.05.02)

The present invention was developed to solve the problems described above. By accurately reflecting the coordinate information of the wound electrodes in the winding process of connecting a plurality of different electrodes, quality tracking based on electrode coordinates is possible. The purpose is to provide a device for generating a roll map of an electrode.

The roll map generating device of an embodiment of the present invention to solve the above problem acquires the longitudinal position of the electrode according to the amount of rotation of the rewinder as coordinate value data when the electrode moves in a roll-to-roll state between an unwinder and a rewinder. location measuring instrument; An input device capable of inputting an input signal indicating the start or end of joint winding by connecting at least two old electrodes, each marked with a plurality of reference points at predetermined intervals, to form a new electrode; a seam sensor that detects a seam that is a connection area between the new electrode and the old electrode that is wound together, and acquires electrode coordinate values of the seam in conjunction with the position measuring device; a reference point detector that detects reference points of the jointly wound new electrode and acquires electrode coordinate values of the reference points in conjunction with the position measuring device; And based on the input signal from the input device, a roll map simulating a new electrode moving in a roll-to-roll state is generated, and in conjunction with the position measuring device, a seam detector, and a reference point detector, the electrode longitudinal coordinate value and the seam are displayed on the roll map. It includes a roll map generator that displays electrode coordinate values and electrode coordinate values of a reference point.

As one example, the position measuring device is a rotary encoder that extracts the electrode position from the rotation amount of the motor driving the rewinder.

As one example, the input device may be an automatic or manual input device.

As a specific example, the input device may be an HMI (Human Machine Interface) control button displayed on a touch screen.

As another example, the input signal is a splicing operation start or end signal for connecting old electrodes that is input automatically or manually.

In addition, the role map generator defines a visualization area to form a role map replicating the new electrode, displays the coordinate value data on the defined area, and assigns the joint and reference point to the coordinate value data of the joint and reference point. It may include a visualization device that visualizes and displays the information.

As an example, it further includes a control unit that controls movement of the electrode between the unwinder and the rewinder, and the control unit is connected to the input device, a position measuring device, a seam detector, and a reference point detector to receive the input signal of the input device, the electrode Coordinate value data regarding the longitudinal position, seam coordinate values, and reference point coordinate value data may be transmitted to the roll map generator.

As a specific example, the role map generator may be a production management system (MES) or a component of the production management system.

As an example, the roll map generator compares the coordinate values of the reference points of the new electrode detected by the reference point detector and the distance between the reference points marked on the old electrode to calculate the amount of variation in electrode length when winding together, The electrode longitudinal coordinate value on the roll map can be corrected by reflecting the calculated amount of variation and displayed on the roll map.

Specifically, the plurality of reference points are marked on each of the old electrodes to be wound, and the coordinate values of the reference points of the new electrode derived from each of the old electrodes are compared with the distance between the plurality of reference points of each old electrode when the plurality of winding electrodes are combined. The amount of variation in electrode length can be calculated.

More specifically, by comparing the coordinate values of the reference points of the new electrode derived from each old electrode, the interval between the plurality of reference points of each old electrode, and the electrode coordinate value of the seam acquired by the seam detector, the The amount of change in electrode length can be calculated.

Additionally, the distance between reference points of each old electrode may be the same or different.

According to the present invention, a roll map that can reflect detailed coordinate information of the wound electrodes can be automatically generated.

Thereby, electrode quality can be easily tracked based on the electrode coordinates of the bundled electrode.

Figure 1 is a schematic diagram showing that different lots of old electrodes are inputted from an unwinder (UW), connected to each other, and the connected new electrodes are wound (combined winding) in a rewinder (RW).
Figure 2 is a schematic diagram showing a roll map generating device for a multi-wound electrode according to an embodiment of the present invention.
Figure 3 shows an example of automatically inputting an input signal indicating the start of joint winding when splicing an old electrode.
Figure 4 is a block diagram showing the configuration of a roll map generator that generates a roll map of a multi-wound electrode.
Figure 5 shows an example of a role map generated by the role map generating device of the present invention.
6 to 8 are schematic diagrams showing various embodiments of a roll map displayed by correcting electrode longitudinal coordinate values by the roll map generating device of the present invention.

Hereinafter, the detailed configuration of the present invention will be described in detail with reference to the attached drawings and various embodiments. The embodiments described below are shown as examples to aid understanding of the present invention, and the attached drawings are not drawn to scale to aid understanding of the invention, and the dimensions of some components may be exaggerated. .

Since the present invention can be subject to various changes and have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

Figure 2 is a schematic diagram showing a roll map generating device for a multi-wound electrode according to an embodiment of the present invention.

The roll map generator 100 according to an embodiment of the present invention determines the longitudinal position of the electrode according to the amount of rotation of the rewinder (RW) when the electrode moves in a roll-to-roll state between the unwinder (UW) and the rewinder (RW). A position measuring device (10) that acquires coordinate value data; When performing joint winding with one new electrode (3) by connecting at least two old electrodes (1, 2) each marked with a plurality of reference points at predetermined intervals, an input signal indicating the start or end of joint winding can be input. Input device (20); A seam detector (30) that detects a seam (T), which is a connection portion of the old electrode of the jointly wound new electrode (3), and acquires electrode coordinate values of the seam (T) in conjunction with the position measuring device (10); a reference point detector (40) that detects reference points of the newly wound electrode (3) and acquires electrode coordinate values of the reference points in conjunction with the position measuring device (10); And based on the input signal of the input device 20, a roll map (RM) that simulates the new electrode 3 moving in a roll-to-roll state is generated, and the position measuring device 10, the seam detector 30, and the reference point detector are used. It includes a roll map generator 60 that is linked with the roll map RM and displays the electrode longitudinal coordinate value, the electrode coordinate value of the seam T, and the electrode coordinate value of the reference point on the roll map RM.

The roll map generating device 100 of the present invention includes a position measuring device 10, an input device 20, a seam detector 30, a reference point detector 40, and a roll map generating unit 60.

In the electrode manufacturing process, the electrode is placed between the unwinder (UW) and the rewinder (RW). After the electrode is released from the unwinder (UW) and a predetermined process is completed, the electrode is wound in the rewinder (RW) to become an electrode roll. In addition, the electrode roll that has completed one process (pre-process) is placed again between the unwinder (UW) and rewinder (RW) in the post-process and moves in a roll-to-roll state to undergo the post-process. In other words, the electrode manufacturing process repeats the electrode moving process in a roll-to-roll state. Therefore, if the position during movement of the electrode can be expressed in coordinates, the position of the electrode in each process can be specified. In addition, when data on quality or defects is acquired, and an event such as electrode breakage occurs and this is connected with a seam connecting member (T), if the location of the data acquisition unit or seam can be displayed with coordinates, the relevant process You can display history information about electrode quality, defects, and various events. Since the electrode moves according to the rotation of the unwinder (UW) and rewinder (RW), the longitudinal position of the electrodes (1, 2, and 3) is specified according to the amount of rotation of the unwinder (UW) and rewinder (RW). can do. In the present invention, the old electrodes 1 and 2 are connected to form the new electrode 3, which is wound together in a rewinder (RW), so that the longitudinal position of the electrode is specified according to the amount of rotation of the rewinder. Therefore, in the present invention, the coordinate value data of the longitudinal positions of the electrodes 1, 2, and 3 can be detected by the rotary encoder 10 installed in the rewinder (RW). Typically, the rotary encoder 10 is installed in the motor drive unit that drives the unwinder (UW) and the rewinder (RW) and can detect the electrode movement distance according to the motor rotation speed (rotation amount). Therefore, when the electrodes 1, 2, and 3 move between the unwinder (UW) and the rewinder (RW), the moving distance can be detected by the rotary encoder (10).

Equipment such as a production management system (MES) for electrode manufacturing or a control unit that controls the roll-to-roll transfer process of electrodes does not recognize that it is a combined winding unless a combined winding signal is input. Accordingly, the coordinates of the end point of the electrode 1 of lot A, which is wound together, cannot be determined. Therefore, in order to determine the coordinate values of the electrodes to be wound together and generate a roll map (RM), the roll map generating device 100 of the present invention includes an input device 20 capable of inputting an input signal indicating the start or end of winding. is provided.

At this time, the connected old electrodes (electrode 1 of lot A and electrode 2 of lot B) are each marked with a plurality of reference points at predetermined intervals. Referring to Figure 2, the electrode 1 of lot A is marked with three reference points (M1, M2, M3), and the electrode 2 of lot B is also marked with three reference points (N1, N2, N3). It is done. These reference points serve as a standard for calculating the amount of change in electrode length when winding together. That is, if the reference point is not marked and there is no reference point detector 40, only the electrode coordinate value of the joint can be obtained by the joint detector. In order to determine the exact coordinate value of each electrode (lot A, B) constituting the new electrode (lot C) by reflecting the amount of change in electrode length, a reference point detector 40 that can acquire the coordinate value of the reference point and the reference point is used. need.

By inputting an input signal through the input device 20, it is transmitted to the system (eg, MES) that the roll-to-roll transfer process currently in progress is a combined winding transfer process. In addition, for example, the MES or the roll map generator 60, which is a component of the MES, generates a roll map (RM) of the multi-wound electrode (lot C) based on the input signal. Therefore, the input device 20 of the present invention is important in that it specifies the cause of electrode connection and provides a roll map generation signal.

The input device 20 can be configured automatically or manually. The input device 20 in FIG. 2 shows an example of a manual input device. When an operator connects the old electrode (1) of lot A and the old electrode (2) of lot B on the splicing table (21), a manual input device connected to the role map generator (60) at the start or end of the work. You can input the input signal to start or end joint winding by pressing the button. For example, the manual input device may be an HMI (Human Machine Interface) control button 20 displayed on a touch screen. The operator may press the HMI control button before connecting the old electrodes 1 and 2 on the splicing table 21 or press the HMI control button after connecting the old electrodes 1 and 2. The creation of HMI control buttons can be performed using known HMI forming solutions such as hardware such as a touch panel screen, a computer, and a data transmission device with the roll map creation unit, and HMI creation software. Therefore, detailed description thereof is omitted in this specification.

The input signal may also be a splicing operation start or end signal for connecting old electrodes, which is input automatically or manually. A manually input splicing operation start or end signal may be input through the HMI control button input by the operator as described above.

Figure 3 shows an example of automatically inputting an input signal indicating the start of joint winding when splicing an old electrode.

As shown, the electrode termination 1A derived from the old electrode roll UW1 of lot A and the electrode starting end 2A derived from the other old electrode roll UW2 are connected. For example, in the standby state of the other old electrode roll (UW2) as shown in Figure 3 (a), when the electrode end signal of the old electrode roll is received by the winding diameter sensor (not shown) installed on the old electrode roll (UW1), the old electrode roll The pressing roll R1 on which the electrode terminal end 1A is wound and the pressing roll R2 on which the other old electrode starting end 2A is pressed are driven to approach each other (see FIG. 3(b)). Since a double-sided tape (DT) is attached to the starting end (2A) of the other old electrode roll, the old electrodes are adhered by pressing with the pressing roll. After adhesion is completed, the cutter 20' installed near the end portion 1A of the old electrode descends and cuts the old electrode, and the electrode of the other old electrode roll connected to the old electrode roll is turned into a roll-to-roll state toward a rewinder (not shown). move Thereby, roll-to-roll transfer from the unwinder to the rewinder can be performed continuously without interruption. A support 22 is installed on the back of the electrode so that the cutter 20' can easily cut the electrode. In this case, the falling (see FIG. 3(b)) or rising (see FIG. 3(c)) of the cutter 20' becomes a signal indicating the start or end of splicing. More precisely, the old electrode 1A ) The motion signal of the motion detection sensor installed on the lifting cylinder connected to the cutter 20' that cuts the roll becomes the start or end signal for bundle winding. As will be described later based on this input signal, the roll map generator 60 recognizes the fact that it is a joint winding, and based on the coordinate values from the position measuring device 10, etc., the roll map (RM) is automatically transmitted. ) is created.

The seam detector 30 detects a seam or a seam connecting member T (eg, a connecting tape) attached to the electrode when connecting the old electrode by joint winding. When the joint detector 30 detects the joint connecting member T, the system or equipment recognizes that the electrodes are connected for some reason. Referring to Figure 2, the electrode is transferred roll-to-roll from the unwinder (UW) to the rewinder (RW), and since the combined winding input signal has already been input from the splicing table 21 on the unwinder side, the rewinder (RW) When the nearby seam detector 30 detects a seam, it recognizes or confirms that the seam is caused by joint winding.

The seam detector 30 is connected to the rotary encoder 10 by wire or wirelessly and can acquire the encoder value when the seam connecting member (T) is detected. From this, the seam detector 30 can acquire electrode coordinate value data regarding the position of the seam connecting member (T). Therefore, in order to correct roll map coordinates, the existence of the joint connecting member (T) and acquisition of its coordinate values must be preceded. The seam detector 30 may be, for example, a color sensor. Since the connecting tape usually has a different color from the electrode, the connecting tape, which is a part of the color different from the electrode, can be detected by a color sensor.

The reference point detector 40 can acquire position coordinate data of the reference points M1, M2, and M3 of the sphere electrode 1 in conjunction with the encoder. That is, the reference point detector 40 can be connected to the encoder by wire or wirelessly to obtain the encoder value when detecting the reference point. Accordingly, the reference point detector 40 can acquire data regarding the position coordinate values of each reference point (M1, M2, and M3) marked on the electrode 1. In addition, when the old electrode (1) and the old electrode (2) are wound together (spliced) and continuously move toward the rewinder (RW), the coordinate values of the reference points (N1, N2, N3) marked on the old electrode (2) Data can also be acquired. The reference point detector 40 may be an OCR reader capable of reading printed characters using optical character recognition (OCR). Alternatively, a vision camera equipped with a vision sensor and capable of detecting the reference points (M1, M2, M3) (N1, N2, N3) can be employed as the reference point detector 40.

Referring again to FIG. 2, the present invention generates a roll map (RM) simulating the new electrode 3 moving in a roll-to-roll state based on the input signal of the input device 20, and the position measuring device 10 , It includes a roll map generator 60 that is linked with the seam detector 30 and the reference point detector 40 to display the electrode longitudinal coordinate value, the electrode coordinate value of the seam, and the electrode coordinate value of the reference point on the roll map (RM). do.

FIG. 4 is a block diagram showing an example of the configuration of the roll map generator 60 that generates the roll map RM of the multi-wound electrode.

The roll map generator 60 stores data acquired from the position measuring device 10, the seam detector 30, and the reference point detector 40, or stores information such as the length of old electrodes, which are scrap electrodes, and the number and spacing of reference points. A database 61 may be provided.

In addition, as will be described later based on the data stored in the database 61, a central processing unit calculates the amount of variation in electrode length during joint winding and corrects the electrode longitudinal coordinate value on the roll map (RM) by reflecting the calculated amount of variation. (62) (calculation part) included. The central processing unit 62 may also process the acquired data and issue a command to visualize the data to the visualization device 63 provided in the role map creation unit 60.

That is, the role map generator 60 defines a visualization area to form a role map replicating the electrode 3 and includes a visualization device 63 that displays coordinate value data on the defined area. The visualization device 63 may visualize and display the seam and the reference point at the location of the coordinate value data of the seam and the reference point.

Referring to FIG. 4, the visualization device 63 includes an acquisition data input unit 63a, a roll map coordinate determination unit 63b, and an image creation unit 63c.

First, the acquisition data input unit 63a receives data from the central processing unit 62.

The role map coordinate determination unit 63b may define a visualization area to form the role map and define pixel coordinate values within the visualization area for each data element of the acquired source data. At this time, when data on specifications such as lot number, length, and width of the electrode roll are input to the control unit 50 or the server by registering electrode roll information, the coordinate recognition unit 63b on the roll map determines the size of the electrode. The visualization area of the role map can be calculated and confirmed according to a predetermined scale conversion scale from the data.

The coordinate detection unit 63b maps acquired quality or defect data and positional data (in the width and length directions) of the electrode, and allocates the mapped data on the visualization area (role map) according to pixel coordinates. can do.

The image generator 63c may express the mapped data elements assigned to each pixel coordinate in the visualization area as at least one legend. A legend refers to various shapes such as circles, squares, and triangles displayed in the visualization area, or the shapes given colors. Therefore, in the visualization area called the roll map, the image generator 63c adds the longitudinal coordinate value data of the electrode, the coordinates of the joint, and the reference point to the pixel coordinates (coordinates on the roll map) corresponding to each position data of the actual electrode. The role map of the present invention can be created by visually displaying values, etc. in the shape, shape, and color display units designated for each data and implementing them on the role map.

In addition, based on data stored in a storage unit such as the database 61, data corresponding to the specific range of the role map can be linked to the storage unit and displayed on the screen (image creation). .

Setting the size of the visualization area or creating an image by determining the coordinates of the visualization area can be performed using various conventional user interfaces or various programs or processing tools related to data allocation, processing, analysis, and visualization. Accordingly, the above-described role map generator 60 is only an example and is not limited to the above-described embodiment.

The role map generator 60 described above may be, for example, a data processing system such as a production management system (MES) or a component of the system. A data processing system refers to a system (including hardware or software) that performs input, processing, output, communication, etc. to perform a series of operations on data. The electrode manufacturing process is equipped with an electrode MES that manages a series of electrode manufacturing processes such as coating, pressing, and slitting. Therefore, if the above-described coordinate data, inspection data, etc. are transmitted to the electrode MES, the above-described roll map can be generated in the electrode MES.

The roll map generating device 100 of the present invention may include a control unit 50 (PLC control unit) that controls electrode movement between the unwinder (UW) and the rewinder (RW). In this case, the control unit 50 is connected to the input device 20, the position measuring device 10, the seam detector 30, and the reference point detector 40 to receive the input signal of the input device 20 and the longitudinal direction of the electrode. Coordinate value data regarding the position, joint coordinate values, and reference point coordinate value data may be transmitted to the roll map generator 60. In this case, the control unit 50 can process the coordinate value data in a form that is easy to process in the role map creation unit 60. The PCL control unit 50 is connected to the encoder, etc. to control the roll-to-roll transfer of the electrode. Therefore, rather than transmitting data directly from the encoder, etc. to a data processing system such as an electrode MES, it is better to transmit data through the control unit 50 for data processing and It is more efficient in terms of management.

In addition, the roll map generating device 100 of the present invention displays the generated roll map on the display unit 70, so that data related to the multi-wound electrode can be easily visually identified at a glance (see FIGS. 2 and 4).

The roll map generator 60 compares the coordinate values of the reference points of the new electrode 3 detected by the reference point detector 40 with the distance between the reference points marked on the old electrodes 1 and 2, and calculates a sum. The amount of variation in electrode length during winding may be calculated, and the electrode longitudinal coordinate value on the roll map RM may be corrected by reflecting the calculated variation and displayed on the roll map RM. As a result, it is possible to create a roll map (RM) of the bundle-wound electrode with coordinates that can reflect the actual electrode 3 whose electrode length changes during roll-winding.

Specifically, the jointly wound old electrodes are each marked with a plurality of reference points (M1, M2, M3) and (N1, N2, N3), and new electrodes (3) derived from each of the old electrodes (1, 2). By comparing the coordinate values of the reference points and the distance between the plurality of reference points of each old electrode, the amount of variation in electrode length when winding together can be calculated.

In addition, since the roll map RM is a roll map of the jointly wound electrode, the end point of the old electrode 1 and the starting point of the old electrode 2 to be wound together can be specified only when the coordinate position of the joint is specified. In addition, by comparing the coordinate values of the reference points of the new electrode derived from each old electrode and the interval between the plurality of reference points of each old electrode, as well as the electrode coordinate values of the joint acquired by the joint detector, the sum The amount of variation in electrode length during winding can be calculated more accurately.

Hereinafter, the roll map creation process using the roll map generating device for the multi-wound electrode of the present invention will be described with reference to various embodiments.

(First Example)

Figure 5 shows an example of a role map generated by the role map generating device 100 of the present invention.

The upper drawing of FIG. 5 is a schematic diagram of scrap electrodes requiring joint winding and shows the old electrodes 1 and 2 inserted from the unwinder side. Each of the old electrodes 1 and 2 is marked with a plurality of reference points (M1, M2, M3) and (N1, N2, N3) at predetermined intervals. The spacing between reference points of each sphere electrode may be the same or different. When the old electrode is wound together, the reference points also remain on the new electrode. Therefore, even if the distance between the reference points between the old electrodes is different, there is no problem in calculating the amount of change in electrode length by comparing the reference points because it corresponds to the distance between the reference points of each remaining old electrode portion of the new electrode. However, in the following examples, for convenience of explanation, the intervals between the reference points marked on the different sphere electrodes 1 and 2 are the same. The old electrode of lot A with a total length of 600m has the reference points M1, M2, and M3 marked at 100,300,500m, and the old electrode of lot B with a total length of 600m has the reference points N1, N2, and N3 marked at 100,300,500m. there is.

This example shows that the old electrodes 1 and 2 of lot A and lot B are wound together, but there is no variation in electrode length. The illustrated roll map (RM) is shown by unwinding the electrode wound in the rewinder in the longitudinal direction and simulates the new electrode 3 moving in a roll-to-roll state. The coordinate values displayed on the roll map (RM) are the coordinate values at the time of each winding in the rewinder (RW), and are acquired by the seam detector 30 and the reference point detector 40 linked to the position measuring device 10 of the rewinder. It contains coordinate values.

As described above, when the joint winding start or end signal is transmitted to the roll map generator 60 by the input device 20, the roll map generator 60 later uses the reference point detector 40, the seam detector 30, and the rewinder. The coordinate value data detected by the position measuring device 10 is displayed on a bar-shaped roll map to generate a roll map (RM).

The first embodiment shows that the electrode lengths of lots A and B do not change, the end of the electrode in lot A is 600 m, and the joint detector 30 detects the joint connecting member T at this coordinate. Since there is no change in electrode length, the distance between each reference point also does not change. Therefore, the upper drawing of FIG. 5 (the roll map of the old electrode on the unwinder input side or the roll map in absolute coordinates) and the lower drawing (the roll map of the new electrode on the rewinder discharge side or the roll map in relative coordinates) are substantially the same, and the coordinate value changes are does not exist. This combined winding is ideal, and actual combined winding involves a change in electrode length as shown in the examples below. The coordinates of the joint in the new electrode of lot C (600 m) and the lengths of lot A and lot B (600 m each) are specified by the roll map generating device 100 of the present invention. However, the reference point coordinate values in the old electrode lot B were combined and displayed in the new electrode C and added to the coordinate values of the old electrode A (in the lower drawing of FIG. 5, N1, N2, and N3 range from 100, 300, and 500 to 700, 900, and 1100, respectively). (changed to). As described above, according to the present invention, the joint coordinates in the new electrode C, the length of the old electrode constituting the new electrode C, and the reference point coordinate values are clearly specified, so even if a defect occurs in the subsequent process, the quality is maintained using the roll map of the new electrode C. Tracking can be done easily.

(Second Embodiment)

Figure 6 is a schematic diagram showing an example of a roll map (RM) displayed by correcting electrode longitudinal coordinate values by the roll map generating device 100 of the present invention.

In this embodiment, the terminal end of the old electrode 1 of lot A was cut by 50 m and then connected to the starting end of the old electrode 2 of lot B with a seam. Considering the excised end portion (C1), the interval between the reference point M3 of the old electrode (1) of lot A and the coordinate value of the joint (T) changes to 50 m. Accordingly, the length of the old electrode 1 of lot A is 550 m, and the coordinate value of the joint at the end of the old electrode 1 is also 550.

Since the old electrodes 1 and 2 are connected at a point of 550 m, the coordinates of the starting end of the old electrode 2 are also 550 m. In this case, since the distance between the reference points of the old electrode (2) does not change, the roll map (relative coordinates) of the new electrode C can be obtained by adding each length of the old electrode (2) to the coordinate value of the old electrode (1) of 550 m. . From the roll map information of the new electrode C, the length of the old electrode of lot A is 550 m, and the amount of change in electrode length when winding together is determined due to the change in the reference point spacing of lot A (the spacing between M3 and the end part decreases from 100 to 50) (total length 50 m) decrease) was possible. In addition, from the roll map information of the new electrode C, the length of the old electrode of lot B constituting the new electrode C did not change to 600m, but the electrode coordinate value was changed to the number adding the electrode length of lot A due to the combined winding.

Even in this embodiment, the joint coordinates in the new electrode C, the length of the old electrode constituting the new electrode C, and the reference point coordinate values are clearly specified, so even if a defect occurs in the subsequent process, quality can be tracked using the roll map of the new electrode C. It can be done easily.

(Third Embodiment)

Figure 7 is a schematic diagram showing an example of a roll map (RM) displayed with electrode longitudinal coordinate values corrected by the roll map generating device of the present invention.

In this example, the roll map is shown when the terminal end of the old electrode 1 of lot A is cut by 50 m, the starting end of lot B is also cut by 50 m, and then lots A and B are connected with a seam. Considering the excised end portions (C1, C2), the interval between the reference point M3 of the old electrode (1) of lot A and the coordinate value of the joint changes to 50 m. Accordingly, the length of the old electrode 1 of lot A is 550 m, and the coordinate value of the joint at the end of the old electrode 1 is also 550.

Since the proximal end of old electrode 2 was also excised by 50 m, the distance between the reference point N1 and the excised proximal end was changed to 50 m. By reflecting this and correcting the coordinate values of the subsequent reference points N2, N3, and the end portion of the old electrode 2, the lower diagram of FIG. 7 is obtained. The upper drawing of FIG. 7 can be viewed as a roll map of absolute coordinates showing the resection parts (C1, C2), and the lower drawing of FIG. 7 can be viewed as a roll map of relative coordinates already reflecting the resection parts (C1, C2). there is.

From the bottom view of FIG. 7, it can be seen that the length of the old electrode 1 is 550 m, the length of the old electrode 2 is 550 m, and the total length of the new electrode 3 is 1100 m.

In this way, by comparing the coordinate values of the reference points of the new electrode 3 detected by the reference point detector 40 and the distance between the reference points marked on the old electrodes 1 and 2, the amount of variation in electrode length during combined winding can be easily calculated. can do.

In addition, the electrode longitudinal coordinate values on the roll map (RM) were corrected and displayed from absolute coordinates to reflect the length variation calculated when creating the roll map of new electrode C.

Even in this embodiment, the joint coordinates (550 m) in the length of the new electrode C (1100 m), the lengths of the old electrodes constituting the new electrode C (each 550 m), and the reference point coordinate values are clearly specified, so defects occur in the subsequent process. Even so, quality tracking can be easily performed using the roll map of the new electrode C.

(Fourth Embodiment)

Figure 8 is a schematic diagram showing various embodiments of a roll map displayed by correcting electrode longitudinal coordinate values by the roll map generating device of the present invention.

In this example, the terminal end of the old electrode 1 of lot A was cut by 50 m, the starting end of the old electrode 2 of lot B was also cut by 50 m, and then the terminal end of lot B was cut by 100 m and wound together with the new electrode C. Considering the excised end portion (C1), the interval between the reference point M3 of the old electrode of lot A and the coordinate value of the joint changes to 50 m. Accordingly, the length of the old electrode 1 of lot A is 550 m, and the coordinate value of the joint at the end of the old electrode 1 is also 550.

Since the proximal end of the old electrode (2) was also excised by 50 m, the distance between the reference point N1 and the excised proximal end (C2) was changed to 50 m. Reflecting this, the coordinate values of the subsequent reference points N2, N3, and the end portion of the old electrode 2 are corrected. In addition, if the coordinate values of the longitudinal end of the old electrode 2 are also corrected to reflect the 100m cut section C3, the lower diagram of FIG. 8 is obtained.

From the bottom view of FIG. 8, it can be seen that the length of the old electrode 1 is 550 m, the length of the old electrode 2 is 450 m, and the total length of the new electrode 3 is 1000 m. In addition, the reference point coordinate values of the new electrode derived from each old electrode were also modified to match the electrode length variation.

Even in this embodiment, the coordinate values of the joint coordinates (550m) in the length of the new electrode C (1000m), the lengths of the old electrodes constituting the new electrode C (A: 550m, B: 450m), and the coordinate values of each reference point are clearly specified. , Even if a defect occurs in the subsequent process, quality tracking can be easily performed using the roll map (RM) of the new electrode C.

Above, the present invention has been described in more detail through drawings and examples. However, since the configurations described in the drawings or examples described in this specification are only one embodiment of the present invention and do not represent the entire technical idea of the present invention, at the time of filing this application, various equivalents and It should be understood that variations may exist.

1: Old electrode (Lot A)
2: Old electrode (Lot B)
3: New electrode (Lot C)
UW, UW1,UW2: Unwinder
RW: Rewinder
10: Position measuring instrument (rotary encoder)
20: Input device (HMI control button)
20': Cutter (motion detection sensor)
21: splicing part
22: support
30: Seam detector
40: Reference point detector
50: control unit
60: Role map creation unit
6: Database
62 Central Processing Department
63 Visualizer
70: Display unit
M1,M2,M3: Reference point of sphere electrode (1)
N1, N2, N3: Reference point of sphere electrode (2)
T: Seam (connection member)
C1, C2, C3: resection area
100: Roll map generating device for jointly wound electrodes

Claims (12)

When the electrode moves in a roll-to-roll state between the unwinder and the rewinder, a position measuring device that acquires the longitudinal position of the electrode according to the amount of rotation of the rewinder as coordinate value data;
An input device capable of inputting an input signal indicating the start or end of joint winding by connecting at least two old electrodes, each marked with a plurality of reference points at predetermined intervals, to form a new electrode;
a seam sensor that detects a seam that is a connection area between the new electrode and the old electrode that is wound together, and acquires electrode coordinate values of the seam in conjunction with the position measuring device;
a reference point detector that detects reference points of the jointly wound new electrode and acquires electrode coordinate values of the reference points in conjunction with the position measuring device; and
Based on the input signal from the input device, a roll map simulating a new electrode moving in a roll-to-roll state is generated, and in conjunction with the position measuring device, the joint sensor, and the reference point detector, the electrode longitudinal coordinate value and the electrode of the joint are displayed on the roll map. A roll map generating device for a multi-wound electrode including a roll map generator that displays coordinate values and electrode coordinate values of a reference point.
According to paragraph 1,
The position measuring device is a roll map generating device for a multi-wound electrode, which is a rotary encoder that extracts the electrode position from the rotation amount of the motor driving the rewinder.
According to paragraph 1,
The input device is a roll map generating device for a jointly wound electrode that is an automatic or manual input device.
According to paragraph 3,
The input device is a roll map generating device for jointly wound electrodes, which is an HMI (Human Machine Interface) control button displayed on a touch screen.
According to paragraph 1,
The input signal is input automatically or manually, and is a splicing operation start or end signal for connecting old electrodes. A roll map generating device for a multi-wound electrode.
According to paragraph 1,
The role map generator,
Defining a visualization area to form a role map replicating the new electrode and displaying the coordinate value data on the defined area,
A roll map generating device for a jointly wound electrode, including a visualization device that visualizes and displays the joint and the reference point in the coordinate value data of the joint and the reference point.
According to paragraph 1,
The roll map generator is a production management system (MES) or a roll map generator for a jointly wound electrode that is a component of the production management system.
According to paragraph 1,
It further includes a control unit that controls electrode movement between the unwinder and the rewinder,
The control unit is connected to the input device, position measuring device, seam detector, and reference point detector and transmits the input signal of the input device, coordinate value data regarding the longitudinal position of the electrode, seam coordinate value, and reference point coordinate value data to the roll map generator. A roll map generating device for jointly wound electrodes.
According to paragraph 1,
The role map generator,
By comparing the coordinate values of the reference points of the new electrode detected by the reference point detector and the distance between the reference points marked on the old electrode, the amount of change in electrode length when combined winding is calculated,
A roll map generating device for a multi-wound electrode that corrects electrode longitudinal coordinate values on the roll map by reflecting the calculated amount of variation and displays them on the roll map.
According to clause 9,
Each of the sphere electrodes wound together is marked with a plurality of reference points,
A roll map generating device for a combined winding electrode that calculates the amount of variation in electrode length during combined winding by comparing the coordinate values of reference points of the new electrode derived from each old electrode and the interval between a plurality of reference points of each old electrode.
According to clause 10,
By comparing the coordinate values of the reference points of the new electrode derived from each old electrode, the interval between the plurality of reference points of each old electrode, and the electrode coordinate value of the joint acquired by the joint detector, the amount of variation in electrode length when taking joint winding is calculated. A roll map generating device for multi-winding electrodes.
According to clause 10,
A roll map generating device for multi-wound electrodes in which the spacing between reference points of each old electrode is the same or different.